they have asked americans to also take part in day of service to honor dr. martin luther king. there will still be an inauguration party in washington but not as over the top as it was four years ago. abc news karen traverse shows us what to expect. >> hundreds of thousands will pack the national mall on monday. eager to witness in person the second inauguration of president obama. but they are not quite partying like it's 2009. four years ago a record 1.8 million people gathered to see the swearing in of the first african-american president. >> i do solumnly swear. >> this year officials estimate that about 600,000 to 800,000 will be on hand. >> they expect more than bush's second inauguration, but a far cry from 2009. there will still be some star power. beyoncÉ, kelly clarkson, james taylor will take part in the swearing-in ceremony. and sure, president obama's supporters will be enthusiastic, but the mood on the mall will be different. the president's speech will reflect that. while the nation is not teetering on the brink like it was in january, 2009, the president is sti